US11609450B2ActiveUtilityA1

Electro-optical device and electronic device

51
Assignee: SEIKO EPSON CORPPriority: Apr 7, 2020Filed: Apr 6, 2021Granted: Mar 21, 2023
Est. expiryApr 7, 2040(~13.7 yrs left)· nominal 20-yr term from priority
Inventors:Yohei Sugimoto
G02F 1/133502G02F 1/133526G02F 2201/50G02F 1/1368
51
PatentIndex Score
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Cited by
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References
9
Claims

Abstract

An electro-optical device includes a first member having a translucent property, a second member having a translucent property and opposed to the first member with a space being disposed therebetween, and a plurality of pixel electrodes provided at an opposite side from the first member with respect to the second member. The first member includes a substrate body. The second member includes a transparent film. A plurality of lens surfaces having a protruding curved surface and each overlapping, in plan view, with corresponding one of the plurality of pixel electrodes are formed at a surface of the second member that is opposed to the first member. A pillar that extends through the space and is in contact with the first member and the second member is provided between the first member and the second member. The space can be formed by removing a sacrificial layer provided between the first member and the second member.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An electro-optical device comprising:
 a first member having a translucent property; 
 a second member having a translucent property and opposed to the first member with a space being interposed therebetween; 
 a third member having a translucent property and provided at an opposite side from the first member with respect to the second member; 
 a plurality of pixel electrodes provided at the opposite side from the first member with respect to the second member; 
 a plurality of lens surfaces having a protruding curved surface and provided at one surface of a surface, opposed to the second member, of the first member and a surface, opposed to the first member, of the second member, the plurality of lens surfaces overlapping with the plurality of pixel electrodes respectively in plan view; and 
 a pillar extending through the space and being in contact with the first member and the second member, 
 wherein the second member includes a through-hole that overlaps, in plan view, with the space, the through-hole being only provided outside a pixel area in which the pixel electrodes are arranged, the pixel area being overlapped with a gap between every adjacent two of the pixel electrodes in plan view, and a portion of the third member extends through the through-hole and the space and protrudes up to a position where the portion is in contact with the first member. 
 
     
     
       2. The electro-optical device according to  claim 1 , wherein
 the pillar is provided at a position that overlaps, in plan view, with a region surrounded by the plurality of lens surfaces. 
 
     
     
       3. The electro-optical device according to  claim 1 , wherein
 a protection layer is stacked at a side surface of the pillar. 
 
     
     
       4. The electro-optical device according to  claim 3 , wherein
 the protection layer includes a reflection suppressing film configured to suppress reflection at the side surface of the pillar. 
 
     
     
       5. The electro-optical device according to  claim 1 , wherein
 the pillar includes a pillar-shaped protruding portion that protrudes from the first member toward the second member. 
 
     
     
       6. The electro-optical device according to  claim 1 , wherein
 a surface of the first member that is opposed to the second member includes a recessed portion that is recessed toward an opposite side from the second member, the recessed portion being provided in a region that overlaps, in plan view, with the pixel area in which the pixel electrodes are arranged, and 
 the plurality of lens surfaces are provided in a region that overlaps, in plan view, with a bottom of the recessed portion. 
 
     
     
       7. The electrode-optical device according to  claim 1  comprising:
 a first substrate including the pixel electrodes and a switching element electrically coupled to the pixel electrodes; and 
 a second substrate opposed to the first substrate with an electro-optical layer being interposed between the first substrate and the second substrate, wherein 
 at least one substrate of the first substrate and the second substrate includes the first member, the space, and the second member. 
 
     
     
       8. The electro-optical device according to  claim 1 , wherein
 the first member includes a light-transmitting substrate body, and 
 the second member includes a transparent film. 
 
     
     
       9. An electronic device comprising the electro-optical device according to  claim 1 .

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